A short-process method for color fixing and antistatic finishing of polyester-viscose fabrics in one bath

Abstract

The present invention discloses a short-process method for color fixing and antistatic finishing of polyester-viscose fabrics in one bath. The method employs a polyester-viscose color fixing agent and an antistatic finishing agent to perform color fixing and antistatic finishing on dyed polyester-viscose fabrics in one bath. The method combines four steps of reduction cleaning of the polyester component, soaping of the viscose component, color fixing of the viscose component, and antistatic finishing of the polyester component into one process. This reduces the number of textile dyeing and finishing steps, shortens the process, reduces water consumption, and improves production efficiency, achieving the effects of energy and water conservation and increasing production capacity. Furthermore, the method improves the water blister color fastness, perspiration color fastness, soaping color fastness, and antistatic effect of the polyester-viscose fabric without affecting the color yield or color shade of the polyester-viscose fabric.

Description

Technical Field

[0001] The invention relates to the technical field of dyeing and finishing, in particular to a short-process process method for color fixing and antistatic finishing of polyester-viscose fabrics in one bath. Background Art

[0002] Polyester-viscose is a blend of polyester and viscose fibers, typically 30-50% viscose and 70-50% polyester, and is commonly used in clothing. This blend combines the advantages of both polyester and viscose fibers, retaining the excellent moisture wicking and softness of viscose while also retaining the wrinkle-resistance and quick-drying properties of polyester. Furthermore, its affordability makes it a popular fabric for clothing in all seasons and a favorite among consumers.

[0003] The current printing and dyeing factory processes polyester-viscose blended fabrics through the following process: dyeing polyester with disperse dyes under high temperature and high pressure conditions → reduction cleaning → acid neutralization → dyeing viscose with reactive dyes → water washing → soaping of viscose components → multiple water washings → color fixation → antistatic finishing and other finishing steps. It can be seen that the processing process is time-consuming and cumbersome, the wet processing time is long, and the cloth surface is prone to pilling, affecting the feel of the fabric. In addition, the energy and water consumption are high, which results in low production capacity, low economic benefits and low product quality in the printing and dyeing factory.

[0004] Polyester-viscose fabrics are dyed with disperse and reactive dyes. Disperse dyes are easily shed when wet-processed after high-temperature setting, resulting in reduced color fastness to soaping, perspiration, and other properties of polyester fabrics. Reactive dyes' active groups are easily hydrolyzed, causing the hydrolyzed dye to stain the fabric, resulting in floating color. This seriously affects the fabric's color fastness to washing, perspiration, and water. Furthermore, the polyester fibers in polyester-viscose fabrics are prone to static electricity, which can cause significant inconvenience in textile processing and apparel applications.

[0005] Therefore, addressing the aforementioned challenges faced by dyeing mills processing polyester-viscose fabrics while simplifying the dyeing and finishing process for polyester-viscose blends with high fastness has become a key research topic in the dyeing and printing industry. A review of literature and patents reveals that there is currently no short-process process that can enhance the color fastness of polyester-viscose fabrics and improve the antistatic properties of polyester fabrics in the same bath. Summary of the Invention

[0006] The purpose of the present invention is to provide a short-process method for color fixing and antistatic finishing of polyester-viscose fabrics in one bath, which adopts polyester-viscose color fixing agent and antistatic finishing agent to carry out color fixing and antistatic finishing in one bath on dyed polyester-viscose fabrics, so as to overcome the shortcomings of the existing technology.

[0007] To solve the above technical problems, the present invention is achieved through the following technical solutions:

[0008] A polyester-viscose fabric color fixing and antistatic one-bath finishing method comprises the following steps:

[0009] S1) dyeing the polyester-viscose fabric;

[0010] S2) After dyeing the polyester and viscose fabrics, drain the water, add water according to the bath ratio of 1:3 to 10, wash the polyester and viscose in the same bath, and drain the liquid;

[0011] S3) using a mixed working solution of a polyester-viscose color fixing agent and an antistatic finishing agent to finish and shape the polyester-viscose fabric, wherein the working solution comprises a polyester-viscose color fixing agent DM-2516, an antistatic finishing agent DM-3722G, and water; and the components thereof are:

[0012] Polyester adhesive fixing agent 20~50g / L,

[0013] Antistatic finishing agent 10-30g / L.

[0014] Preferably, in step S3), a color fixing and antistatic finishing process is adopted, a dipping and padding method is used on a setting machine, the fabric rolling rate is 70-100%, and the fabric can be set at 130-190°C after dipping and padding.

[0015] Preferably, in step S2), the constant temperature water washing time at 80-95° C. is 20-30 minutes.

[0016] Preferably, the polyester-adhesive color fixing agent in step S3) is polyester-adhesive color fixing agent DM-2516, which is a liquid auxiliary agent, and the active ingredient is a cationic polymer, which is composed of 15 to 60% by weight.

[0017] Preferably, the antistatic finishing agent in step S3) is antistatic finishing agent DM-3722G, which is a liquid additive and has a polyol carboxylate compound as an active ingredient, with a composition of 20 to 65% by weight.

[0018] The present invention has the following beneficial effects:

[0019] The process of the present invention combines the four processes of reduction cleaning of the polyester component in the polyester-viscose fabric, soaping of the viscose component, color fixation of the viscose component, and antistatic finishing of the polyester component into one process, thereby reducing the number of textile dyeing and finishing processes, shortening the process, reducing water consumption, and improving production efficiency, achieving the effects of energy and water conservation and increasing production capacity. It can also improve the water blister color fastness, perspiration color fastness, soaping color fastness, and antistatic effect of the polyester-viscose fabric without affecting the color yield and color shade of the polyester-viscose fabric. Specific advantages are:

[0020] (1) Improve the color fastness of polyester and viscose fabrics

[0021] Polyester-viscose color fixing agent can improve the color fastness to soaping, water blistering and perspiration of polyester-viscose fabrics, thereby increasing the wearing value of polyester-viscose fabrics. At the same time, it can reduce the return rate of polyester-viscose fabrics caused by poor color fastness in printing and dyeing factories, improve product satisfaction and enhance the grade of clothing fabrics.

[0022] (2) Improve the antistatic properties of polyester-viscose fabrics

[0023] The antistatic finishing agent reduces the surface charge accumulation of polyester fibers in polyester-viscose fabrics through antistatic finishing, thereby achieving the purpose of antistatic. This combined process of the invention can not only prevent the generation of static electricity, but also make the fabric easier to clean.

[0024] (3) The finishing process is simple and easy to industrialize

[0025] The finishing method of the present invention is simple and feasible to operate. The same-bath finishing can be performed directly on a setting machine with one dip and one roll. Compared with the traditional two-dip and two-roll method, it is simple and easy to operate, and does not require additional dyeing and finishing, and is easy to realize industrialization.

[0026] (4) Considerable economic benefits

[0027] The present invention combines multiple working steps into one, shortens the process flow, improves production capacity, saves energy and water, and has considerable economic benefits.

[0028] (5) Environmental protection

[0029] The polyester-adhesive fixing agent and antistatic finishing agent used in the present invention are both environmentally friendly products. Compared with the traditional process of using hydrosulfite for reduction cleaning, the sewage treatment cost is reduced, the purpose of energy saving and consumption reduction is truly achieved, and the ecological benefits are considerable. DETAILED DESCRIPTION

[0030] The following is a clear and complete description of the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0031] Example 1:

[0032] A color fixing and antistatic one-bath finishing process for bright red polyester-viscose knitted fabric comprises the following steps:

[0033] 1) Dyeing: Dyeing the polyester-viscose fabric and draining the liquid;

[0034] 2) Water washing: add water at a bath ratio of 1:5, wash once at 90℃, and drain;

[0035] 3) Same-bath finishing: Mix the polyester-adhesive fixing agent DM-2516 (30g / L) and the antistatic finishing agent DM-3722G (20g / L) in a working solution, and use a dipping and padding method on a setting machine. The fabric padding rate is 85%, and the fabric is set at 160℃ after dipping and padding.

[0036] 4) Test results:

[0037] a) Color fastness to soaping

[0038] Tested in accordance with GB / T 3921 Method A-2008 “Textiles—Tests for Color Fastness—Color Fastness to Washing with Soap”.

[0039] Rating No processing 2 One-bath finishing process 3-4

[0040] b) Color fastness to blister

[0041] Use a bath ratio of 1:50, add 2.0g / L of Tide detergent to 100℃ water, soak until the water temperature cools to room temperature, remove the fabric sample, and grade the residual liquid for color fading.

[0042] Rating No processing 1-2 One-bath finishing process 4

[0043] c) Fixed color change

[0044] According to CIE standards, the color difference △E of the fabric after fixing was measured using a ColorQuest XE spectrophotometer under light source D65 / 10, with the unfixed sample as the benchmark.

[0045] △E value One-bath finishing process 0.31

[0046] d) Antistatic effect

[0047] Refer to GB / T 12703.1-2008 Evaluation of electrostatic properties of textiles Part 1: Static voltage half-life.

[0048] Static voltage / v Half-life / s No processing 1168 15.40 One-bath finishing process 530 0.00

[0049] Example 2:

[0050] A one-bath finishing process for color fixing and antistatic treatment of black polyester-viscose knitted fabrics, comprising the following steps:

[0051] 1) Dyeing: Dyeing the polyester-viscose fabric and draining the liquid;

[0052] 2) Water washing: add water at a bath ratio of 1:10, wash once at 95℃, and drain;

[0053] 3) Same-bath finishing: Mix the polyester-adhesive fixing agent DM-2516 (40g / L) and the antistatic finishing agent DM-3722G (30g / L) in a working solution, and use a dipping and padding method on a setting machine. The fabric padding rate is 93%, and the fabric is set at 170℃ after dipping and padding.

[0054] 4) Test results:

[0055] a) Color fastness to soaping

[0056] The test was conducted in accordance with ISO 105-C06:2010 method C1S “Textiles — Tests for colour fastness — Colour fastness to domestic and commercial washing” using six-fibre lining fabric.

[0057]

[0058] b) Color fastness to perspiration

[0059] Tested in accordance with ISO105-E04:2008 "Textiles - Tests for colour fastness - Colour fastness to perspiration".

[0060]

[0061] c) Fixed color change

[0062] According to CIE standards, the color difference △E of the fabric after fixation was measured using a ColorQuest XE spectrophotometer under light source D65 / 10, with the untreated fabric sample as the benchmark.

[0063] △E One-bath finishing process 0.26

[0064] d) Antistatic effect

[0065] Refer to GB / T 12703.1-2008 Evaluation of electrostatic properties of textiles Part 1: Static voltage half-life.

[0066] Static voltage / v Half-life / s No processing 993 14.30 One-bath finishing process 319 0.00

[0067] e) Color fastness to blister

[0068] Use a bath ratio of 1:50, add 2.0g / L of Tide detergent to 90℃ water, soak until the water temperature cools to room temperature, remove the fabric sample, and grade the residual liquid for color fading.

[0069] Rating No processing 1-2 One-bath finishing process 4

[0070] Example 3:

[0071] A blue polyester-viscose woven fabric color fixing and antistatic one-bath finishing process comprises the following steps:

[0072] 1) Dyeing: Dyeing the polyester-viscose fabric and draining the liquid;

[0073] 2) Water washing: add water at a bath ratio of 1:8, wash once at 85℃, and drain;

[0074] 3) Same-bath finishing: Mix the polyester-adhesive fixing agent DM-2516 (30g / L) and the antistatic finishing agent DM-3722G (10g / L) in a working solution, and use a dipping and padding method on a setting machine. The fabric padding rate is 76%, and the fabric is set at 180℃ after dipping and padding.

[0075] 4) Test results:

[0076] a) Color fastness to soaping

[0077] The test was conducted in accordance with GB / T 3921 Method B-2008 “Textiles—Tests for Colour Fastness—Colour Fastness to Washing with Soap” using six-fiber interlining.

[0078]

[0079] b) Color fastness to blister

[0080] Use a bath ratio of 1:50, add 2.0g / L of Tide detergent to 85℃ water, soak until the water temperature cools to room temperature, remove the fabric sample, and grade the residual liquid for color fading.

[0081] Rating No processing 2 One-bath finishing process 4

[0082] c) Antistatic effect

[0083] Refer to GB / T 12703.1-2008 Evaluation of electrostatic properties of textiles Part 1: Static voltage half-life.

[0084] Static voltage / v Half-life / s No processing 1209 18.32 One-bath finishing process 619 0.00

[0085] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A short-process method for color fixing and antistatic finishing of polyester-viscose fabrics in one bath, characterized in that The following steps are involved: S1) dyeing a polyester-viscose fabric; S2) draining the polyester-viscose fabric after dyeing, adding water at a bath ratio of 1:3-10, washing the polyester and viscose together in the same bath, and draining the water; S3) finishing and shaping the polyester-viscose fabric with a mixed working solution of a polyester-viscose color fixing agent and an antistatic finishing agent, the working solution comprising a polyester-viscose color fixing agent DM-2516, an antistatic finishing agent DM-3722G, and water; the working solution comprising: 20-50 g / L of the polyester-viscose color fixing agent DM-2516 and 10-30 g / L of the antistatic finishing agent DM-3722G; In step S3), the polyester-adhesive fixing agent DM-2516 is a liquid auxiliary agent, the active ingredient of which is a cationic polymer, and the weight ratio is 15-60%. The antistatic finishing agent DM-3722G is a liquid auxiliary agent, the active ingredient of which is a polyol carboxylate compound, and the weight ratio is 20-65%.

2. The short-process method for color fixing and antistatic finishing of polyester-viscose fabrics in one bath according to claim 1, characterized in that: In step S3), a color fixing and antistatic finishing process is adopted, with one dipping and one padding on a setting machine, the fabric padding rate is 70-100%, and the fabric is set at 130-190°C after dipping and padding.

3. The short-process method for color fixing and antistatic finishing of polyester-viscose fabrics in one bath according to claim 1, characterized in that: In step S2), the washing time is 20 to 30 minutes at a constant temperature of 80 to 95°C.

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